Virus and bacterial removal ability of TiO2 nanowire-based self-supported hybrid membranes

Shehab, Mohammed Ahmed; Szőri-Dorogházi, Emma; Szabó, S.; Valsesia, Andrea; Chauhan, Tanya; Koós, Tamás; Muránszky, Gábor; Szabó, Tamás; Hernádi, Klára; Németh, Zoltán

doi:10.1016/j.arabjc.2022.104388

Cited by 6 publications

(3 citation statements)

References 39 publications

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“…The use of nanowires in food industry formulations can increase the physical and chemical stability of products, making them more resistant to storage or processing. The use of TiO2 nanowires can help reduce microbial contamination of food products and improve food safety (Shehab et al, 2023;Zhu et al, 2018). The unique nanowire morphology can develop new product innovations in the food industry, such as the development of new textures, enhanced nutrient absorption, or the creation of new functional products such as edible films.…”

Section: Sem Analysismentioning

confidence: 99%

Pengembangan TiO2 nanowire terdoping Nikel Kobalt sebagai Fotokatalis yang Efisien untuk Menghilangkan Pewarna Tartrazine

Misriyani,

If'all,

Sahabuddin

2024

jppipa, pendidikan ipa, fisika, biologi, kimia

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Tartrazine is a yellow synthetic dye that is widely used as a coloring agent in food and beverage products. However, the safety of this chemical compound is still a concern due to potential health risks such as allergic reactions, hyperactive behavior in children, increased risk of cancer and other negative impacts. This research aim to introduces a new approach to reduce the concentration of tartrazine dye using cobalt and nickel doped TiO2 nanowires. Cobalt- and nickel-doped TiO2 nanowires were synthesized by a hydrothermal method, followed by thermal treatment at 270°C, and then used in a photocatalytic reactor using UV irradiation to facilitate the reduction of tartrazine concentration. Material characterization was carried out to determine the morphology and crystallinity of the photocatalyst which is effective in reducing the absorption of tartrazine solution. The photocatalytic degradation experiment demonstrates the ability of the synthesized material as a photocatalyst, effectively reducing the absorbance of tartrazine solution, a commonly used food coloring. This finding promises significant progress in the development of sustainable food safety strategies by offering a dye degradation method.

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Section: Sem Analysismentioning

confidence: 99%

Pengembangan TiO2 nanowire terdoping Nikel Kobalt sebagai Fotokatalis yang Efisien untuk Menghilangkan Pewarna Tartrazine

Misriyani,

If'all,

Sahabuddin

2024

jppipa, pendidikan ipa, fisika, biologi, kimia

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“…Some of the most promising nanoparticles (NPs) utilized in recent research works are semiconductor metal oxides such as titanium dioxide (TiO 2 ) doped with metal ions such as copper (Cu), iron (Fe), and cerium (Ce) [ 9 , 10 , 11 ]. For instance, Cu-doped TiO 2 nanoparticles have been reported to have antimicrobial activity against Phytophthora palmivora , Escherichia coli , and Staphylococcus aureus [ 12 , 13 , 14 ]. Furthermore, copper-based nanomaterials such as copper(I) iodide (CuI) have attracted the interest of many researchers due to their exceptional properties and diverse fields of application [ 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of TiO2-Cu2+/CuI Nanocomposites and Evaluation of Antifungal and Cytotoxic Activity

et al. 2023

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Fungal infections have become a significant public health concern due to their increasing recurrence and harmful effects on plants, animals, and humans. Opportunistic pathogens (among others from the genera Candida and Aspergillus) can be present in indoor air, becoming a risk for people with suppressed immune systems. Engineered nanomaterials are novel alternatives to traditional antifungal therapy. In this work, copper(I) iodide (CuI) and a copper-doped titanium dioxide—copper(I) iodide (TiO2-Cu2+/CuI) composite nanomaterials (NMs)—were synthesized and tested as antifungal agents. The materials were synthesized using sol-gel (TiO2-Cu2+) and co-precipitation (CuI) techniques. The resulting colloids were evaluated as antifungal agents against Candida parapsilosis and Aspergillus niger strains. The NMs were characterized by XRD, HRTEM, AFM, and DLS to evaluate their physicochemical properties. The NMs present a high size dispersion and different geometrical shapes of agglomerates. The antifungal capacity of the NMs by the minimum inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) was below 15 µg/mL against Candida parapsilosis and below 600 µg/mL against Aspergillus niger for both NMs. Holotomography microscopy showed that the NMs could penetrate cell membranes causing cell death through its rupture and reactive oxygen species (ROS) production. Cytotoxicity tests showed that NMs could be safe to use at low concentrations. The synthesized nanomaterials could be potential antifungal agents for biomedical or environmental applications.

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“…A noteworthy feature is the tunability of its bandgap, which can be either direct (2 eV–4 eV) or indirect (1 eV–1.4 eV) depending on the conditions (e. g. presence of surface and/or defect states, applied strain) and can be engineered by changing the latter [ 26 , 27 , 28 ]. Such a feature paves the way for its use in opto-electronic applications of different types and has recently been employed in gas sensing [ 29 , 30 ], magnetic storage [ 31 ], solar energy harvesting—transformation [ 32 ] and catalysis [ 33 , 34 ], as a photothermally active and photoconductive compound [ 35 ], as well as a biocide against several targets, including fungi [ 36 , 37 , 38 ], bacteria [ 39 , 40 , 41 ], or cellular lines (tumor [ 42 ] and macrophage [ 43 ]).…”

Section: Introductionmentioning

confidence: 99%

CuO Nanoparticles and Microaggregates: An Experimental and Computational Study of Structure and Electronic Properties

et al. 2023

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The link between morphology and properties is well-established in the nanoparticle literature. In this report, we show that different approaches in the synthesis of copper oxide can lead to nanoparticles (NPs) of different size and morphology. The structure and properties of the synthesized NPs are investigated with powder X-ray diffraction, scanning electron microscopy (SEM), and diffuse reflectance spectroscopy (DRS). Through detailed SEM analyses, we were able to correlate the synthetic pathways with the particles’ shape and aggregation, pointing out that bare hydrothermal pathways yield mainly spheroidal dandelion-like aggregates, whereas, if surfactants are added, the growth of the nanostructures along a preferential direction is promoted. The effect of the morphology on the electronic properties was evaluated through DRS, which allowed us to obtain the electron bandgap in every system synthesized, and to find that the rearrangement of threaded particles into more compact structures leads to a reduction in the energy difference. The latter result was compared with Density Functional Theory (DFT) computational models of small centrosymmetric CuO clusters, cut from the tenorite crystal structure. The computed UV-Vis absorption spectra obtained from the clusters are in good agreement with experimental findings.

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Virus and bacterial removal ability of TiO2 nanowire-based self-supported hybrid membranes

Cited by 6 publications

References 39 publications

Pengembangan TiO2 nanowire terdoping Nikel Kobalt sebagai Fotokatalis yang Efisien untuk Menghilangkan Pewarna Tartrazine

Pengembangan TiO2 nanowire terdoping Nikel Kobalt sebagai Fotokatalis yang Efisien untuk Menghilangkan Pewarna Tartrazine

Synthesis of TiO2-Cu2+/CuI Nanocomposites and Evaluation of Antifungal and Cytotoxic Activity

CuO Nanoparticles and Microaggregates: An Experimental and Computational Study of Structure and Electronic Properties

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